A Post-Infectious Steroid-Responsive Brainstem Lesion Associated With COVID-19.

A 51-year-old man developed coma, bilateral pupillary dilation, ophthalmoplegia and quadriplegia 4 weeks after testing positive for COVID-19. MRI demonstrated a symmetric midline pontine non-enhancing T2-FLAIR hyperintense lesion. The patient was treated with intravenous methylprednisolone, which resulted in improvement of his Glasgow Coma Scale (GCS) from 3 to 15 over the next 5 days. To our knowledge, this is the first case of a post-infectious steroid-responsive brainstem lesion associated with COVID-19. The clinical picture best fits in the family of a steroid-responsive encephalopathy and reminds us that COVID-19 may cause severe post-infectious neurological complications.